CN103724529A - Synthesis process of water-absorbent resin with prominently improved water absorption capability - Google Patents
Synthesis process of water-absorbent resin with prominently improved water absorption capability Download PDFInfo
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- CN103724529A CN103724529A CN201210405359.8A CN201210405359A CN103724529A CN 103724529 A CN103724529 A CN 103724529A CN 201210405359 A CN201210405359 A CN 201210405359A CN 103724529 A CN103724529 A CN 103724529A
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- acrylamide
- absorbent resin
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- absorbing properties
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Abstract
The invention discloses a synthesis process of a water-absorbent resin with prominently improved water absorption capability. The synthesis process comprises the following steps: (a) firstly, needed raw materials are weighed according to the ratio, and comprise sodium bentonite, acrylamide and 2-acrylamide-2-methyl propanesulfonic acid; (b) the acrylamide is put in a reaction container; distilled water is added for high-speed stirring; (c) the standing is implemented for a period of time to totally hydrate for future use; (d) after the dissolving is complete, the sodium bentonite, the 2-acrylamide-2-methyl propanesulfonic acid, a cross-linking agent and an initiator are added to continuously stir with high speed and to pre-react with constant temperature; the mass of the acrylamide is 14% of the total monomer mass; (e) the reaction mixed liquid is poured in a mold; the temperature is increased; the thermostatic water bath saponification is implemented to form a colloid; the reaction is finished. The synthesis process can successfully synthesize the water-absorbent resin with high performances, and obviously improves the synthesis efficiency and water absorption capability of the product through controlling the dosage of the acrylamide in the synthesis process.
Description
Technical field
The present invention relates to a kind of absorbent resin synthesis technique that significantly improves water absorbing properties.
Background technology
The character that material can absorb moisture in water is called water-absorbent.The water-absorbent of material represents with water-intake rate, and water-intake rate has quality water-intake rate and two kinds of method for expressing of volume water absorption rate.
In material, absorbing water point sucks by open pores, therefore open porosity is larger, the water regain of material the more.Material water suction reaches volume water absorption rate when saturated, is the open porosity of material.
The water-absorbent of material is relevant with the porosity of material and pore character.For trickle open pore, porosity is larger, and water-intake rate is larger.The pore moisture of remaining silent can not be entered, although and opening macropore moisture easily enters, can not retain, can only soak hole wall, so water-intake rate is still less.The water-intake rate of various materials is very not identical, widely different, and as the water-intake rate of grouan only has 0.5%～0.7%, concrete water-intake rate is 2%～3%, and the water-intake rate of clay brick reaches 8%～20%, and the water-intake rate of timber can exceed 100%.
The character that material absorbs moisture in damp atmosphere is called water absorbability.Moist material also can be emitted moisture in dry air, and this claims water absorbability.The water absorbability of material represents with water ratio.Water ratio mean material internal the moisture heavy percentage that accounts for material dry weight.
The water absorbability of material changes with the humidity of air and the variation of envrionment temperature, and when atmospheric moisture is large and temperature is lower, the water ratio of material is just large, otherwise little.The water ratio when humidity of contained humidity and air balances each other in material, is called equilibrium moisture content.
Absorb the moisture of own wt hundred times to thousand times, nontoxic, harmless, pollution-free; Water-retaining capacity extra-heavy, water retention capacity extra-high-speed, the high-molecular weight polymer obtaining by acroleic acid polymerization → high water-retaining capacity, the balance of absorbed dose under high loading, absorb water point and can not be extruded by simple physical method, and can repeatedly release water, water suction.Be applied to agroforestry aspect, can form at plant root " miniature reservoir ".Super absorbent resin, except water suction, can also absorb fertilizer, agricultural chemicals, and discharge slowly to increase fertilizer efficiency and drug effect.Super absorbent resin, with its superior performance, is widely used in agroforestry production, urban landscaping, drought-resistant water-preserving, defends and controls sand, and brings into play huge effect.In addition, super absorbent resin also can be applicable to many fields such as health care, oil production, material of construction, communications and transportation.
In the synthesis technique of absorbent resin, acrylamide consumption will directly affect the performance of combined coefficient and product, and suitable acrylamide consumption of how to confirm seems particularly crucial to the synthetic of absorbent resin.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of absorbent resin synthesis technique that significantly improves water absorbing properties is provided, this synthesis technique can successfully synthesize high performance absorbent resin, and in building-up process, pass through to control acrylamide consumption, thereby obviously improved the water absorbing properties of combined coefficient and product.
Object of the present invention is achieved through the following technical solutions: a kind of absorbent resin synthesis technique that significantly improves water absorbing properties, comprises the following steps:
(a) first, according to proportioning, take synthetic required starting material, starting material comprise sodium bentonite, acrylamide and 2-acrylamide-2-methylpro panesulfonic acid;
(b) acrylamide is placed in to reaction vessel, adds distilled water, high-speed stirring;
(c) standing for some time, aquation is complete, stand-by;
(d) until completely dissolved, add sodium bentonite, 2-acrylamide-2-methylpro panesulfonic acid, linking agent and initiator, continue high-speed stirring, constant temperature pre-reaction, and control acrylamide quality accounts for 10%～18% of monomer total mass;
(e) reaction mixture is poured in mould, heated up, water bath with thermostatic control saponification, colloid forms, and reaction finishes.
Described reaction vessel is beaker.
In described step (c), time of repose is 60 minutes.
In described step (d), constant temperature pre-reaction temperature is 50 ℃.
In described step (d), constant temperature pre-reaction time is 120 minutes.
Control acrylamide quality and account for 14% of monomer total mass.
Control acrylamide quality and account for 10% of monomer total mass.
Control acrylamide quality and account for 18% of monomer total mass.
In sum, the invention has the beneficial effects as follows: can successfully synthesize high performance absorbent resin, and in building-up process, pass through to control acrylamide consumption, thereby obviously improve the water absorbing properties of combined coefficient and product.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1:
A kind of absorbent resin synthesis technique that significantly improves water absorbing properties the present invention relates to, comprises the following steps:
(a) first, according to proportioning, take synthetic required starting material, starting material comprise sodium bentonite, acrylamide and 2-acrylamide-2-methylpro panesulfonic acid;
(b) acrylamide is placed in to reaction vessel, adds distilled water, high-speed stirring;
(c) standing for some time, aquation is complete, stand-by;
(d) until completely dissolved, add sodium bentonite, 2-acrylamide-2-methylpro panesulfonic acid, linking agent and initiator, continue high-speed stirring, constant temperature pre-reaction, and control acrylamide quality accounts for 14% of monomer total mass;
(e) reaction mixture is poured in mould, heated up, water bath with thermostatic control saponification, colloid forms, and reaction finishes.
Described reaction vessel is beaker.
In described step (c), time of repose is 60 minutes.
In described step (d), constant temperature pre-reaction temperature is 50 ℃.
In described step (d), constant temperature pre-reaction time is 120 minutes.
In order to obtain best acrylamide consumption, the present invention done acrylamide in synthesis technique on the high-absorbent material that is synthesized impact test, known by result: when acrylamide quality account for monomer total mass 14% time, it is best that the water absorbing properties of absorbent resin reaches.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is only, controls acrylamide quality and accounts for 10% of monomer total mass, and other parts of the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is only, controls acrylamide quality and accounts for 18% of monomer total mass, and other parts of the present embodiment are identical with embodiment 1, repeat no more.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, every foundation technical spirit of the present invention, and any simple modification, equivalent variations that above embodiment is done, within all falling into protection scope of the present invention.
Claims (8)
1. an absorbent resin synthesis technique that significantly improves water absorbing properties, is characterized in that, comprises the following steps:
(a) first, according to proportioning, take synthetic required starting material, starting material comprise sodium bentonite, acrylamide and 2-acrylamide-2-methylpro panesulfonic acid;
(b) acrylamide is placed in to reaction vessel, adds distilled water, high-speed stirring;
(c) standing for some time, aquation is complete, stand-by;
(d) until completely dissolved, add sodium bentonite, 2-acrylamide-2-methylpro panesulfonic acid, linking agent and initiator, continue high-speed stirring, constant temperature pre-reaction, and control acrylamide quality accounts for 10%～18% of monomer total mass;
(e) reaction mixture is poured in mould, heated up, water bath with thermostatic control saponification, colloid forms, and reaction finishes.
2. a kind of absorbent resin synthesis technique that significantly improves water absorbing properties according to claim 1, is characterized in that, described reaction vessel is beaker.
3. a kind of absorbent resin synthesis technique that significantly improves water absorbing properties according to claim 1, is characterized in that, in described step (c), time of repose is 60 minutes.
4. a kind of absorbent resin synthesis technique that significantly improves water absorbing properties according to claim 1, is characterized in that, in described step (d), constant temperature pre-reaction temperature is 50 ℃.
5. a kind of absorbent resin synthesis technique that significantly improves water absorbing properties according to claim 1, is characterized in that, in described step (d), constant temperature pre-reaction time is 120 minutes.
6. according to a kind of absorbent resin synthesis technique that significantly improves water absorbing properties described in any one in claim 1～5, it is characterized in that, control acrylamide quality and account for 14% of monomer total mass.
7. according to a kind of absorbent resin synthesis technique that significantly improves water absorbing properties described in any one in claim 1～5, it is characterized in that, control acrylamide quality and account for 10% of monomer total mass.
8. according to a kind of absorbent resin synthesis technique that significantly improves water absorbing properties described in any one in claim 1～5, it is characterized in that, control acrylamide quality and account for 18% of monomer total mass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210405359.8A CN103724529A (en) | 2012-10-11 | 2012-10-11 | Synthesis process of water-absorbent resin with prominently improved water absorption capability |
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| CN201210405359.8A CN103724529A (en) | 2012-10-11 | 2012-10-11 | Synthesis process of water-absorbent resin with prominently improved water absorption capability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752525A (en) * | 2018-06-27 | 2018-11-06 | 安徽理工大学 | A kind of nano silver water-absorbing resin and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752525A (en) * | 2018-06-27 | 2018-11-06 | 安徽理工大学 | A kind of nano silver water-absorbing resin and preparation method thereof |
| CN108752525B (en) * | 2018-06-27 | 2020-09-01 | 安徽理工大学 | Nano-silver water-absorbent resin and preparation method thereof |
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Application publication date: 20140416 |